<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="../js/vue.js"></script>
    <title>Document</title>
</head>

<body>
    <div id="root">
        <h2>人员列表</h2>
        <button @click="updateMei">修改马冬梅的信息</button>
        <ul>
            <li v-for="(item,index) in persons" :key="item.id">{{item.name}}-{{item.age}}-{{item.sex}} </li>
        </ul>
    </div>
    <script>
        Vue.config.productionTip = false; //以阻止vue在启动时生成生产提示
        new Vue({
            el: "#root",
            data: {

                keyWord: "",
                persons: [{
                        id: "001",
                        name: "马冬梅",
                        age: 18,
                        sex: '女'
                    },
                    {
                        id: "002",
                        name: "周冬雨",
                        age: 19,
                        sex: '女'
                    },
                    {
                        id: "003",
                        name: "周杰伦",
                        age: 20,
                        sex: '男'
                    },
                    {
                        id: "004",
                        name: "温兆伦",
                        age: 21,
                        sex: '男'
                    },
                ],
            },
            methods: {
                updateMei() {
                    // this.persons[0].name = "名师" //奏效
                    // this.persons[0].age = 50  //奏效
                    // this.persons[0].sex = "男"  //奏效

                    // 代码中改变了，但是vue没有监测到，vue模板中没有改，渲染到页面中也没有改
                    this.persons[0] = {
                        id: "001",
                        name: "名师",
                        age: 18,
                        sex: '男'
                    }
                },
            }

        })
    </script>

</body>

</html>